The answer is C: emotional appeal. This quote enpowers unity and a sense of duty among his listeners.
Hope this helps ^-^
The right answer for the question that is being asked and shown above is that: "the lack of fresh, clean supplies of water" Overpopulation has led to concerns over the lack of fresh, clean supplies of water. This is the correct answer.
The Battle ended in a physical lose to the allied Greece forces of about 7 thousand men lead by King Leonidas who held of the Persian invasion force for around 6 days about half of which were battle days however a disgruntled local betrayed the Greeks to the Persian by telling them of a small mountain pass that allowed the Greeks to be flanked. Upon hearing this Leonidas ordered a full retreat while he and a rear guard of around 300 Spartans, 700 Thespians, 400 Thespians and an odd assortment of more local troops stayed to allow the rest of the force to retreat and warn the rest of Greece of the Persian's advance. The Battle of Thermopylae ended in the death of King Leonidas and his rear guard as well as a significant blow to the Persians numbers and moral. It also galvanized the rest of Greece to victory.